Jacaranda acutifolia Humb. (Bignoniaceae) is a cultivated species in Taiwan area as an
ornamental plant. The antioxidant activity of the acetone extract and its subfractions of
Jacaranda acutifolia flower were evaluated using different antioxidant methodologies: DPPH
free radical scavenging, chelating activity on ferrous ion and reducing power. The total phenolic content of these extracts was determined as the gallic acid equivalent. The antioxidant activities of all extracts were concentration-dependent and consistent with the total phenolic content. The ethyl acetate soluble fraction (EF) of Jacaranda acutifolia flower possessed the highest antioxidant activities, including effective DPPH radical scavenging (EC50 = 0.049 mg/mL) and ferric ion reducing activities (EC50 = 0.125 mg/mL). The total phenolic contents were estimated as 17.20 mg/g gallic acid equivalents. These results demonstrated the antioxidant potential of the extracts of Jacaranda acutifolia flower.
關聯:
Journal of Chinese Medicine, Vol.17 no.4, pp.143-150
